Read Panasonic KX-TS2365CAB / KX-TS2365CAW Service Manual online
12
KX-TS2365CAB/KX-TS2365CAW
8 Troubleshooting Guide
8.1.
Service Hints
8.2.
Pulse Dialing Problems
SYMPTOM
CURE
Dead
Check IC801, X801, X802
Can't hear the voice from handset.
Check Q109, Q405, Q406.
No voice transmit.
Check Q424, Q108.
Can't tone dial.
Check IC801, R921, R922, R923, R924, R925 and C923.
Can't pulse dial
Check Q101, Q103, Q104.
Can’t auto redial
Check IC201, Q201.
No rings.
Check D3, D4, D5, D6, IC1 and Q1.
Can’t speak with the speakerphone.
Check IC601
Can't hold.
Check Q107.
Can't speak with the handset.
Check handset jack
Can't speak with the headset.
Check headset jack
Can’t change the volume for speakerphone.
Check IC801, IC601, R661, R662, R663
Can't change the volume for handset.
Check IC801, Q491, Q492, Q493, R403, R404, R412
No volume handset or speakerphone.
Check IC801, Q108, Q401.
YES
YES
YES
YES
NO
NO
NO
Can a pulse sound
be monitored?
be monitored?
Does the voltage across
Tip(T) and Ring(R) rapidly
switch between 48V and 10V?
Tip(T) and Ring(R) rapidly
switch between 48V and 10V?
Check TEL line Jack.
Do pulses (3 Vp-p) appear
at Pin22 of IC801?
at Pin22 of IC801?
Do pulses (0.6 Vp-p) appear
at base of Q103?
at base of Q103?
Check Q101,Q103.
Check Dial mode.
Check Q204
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